Dynamic multi-coil tailored excitation for transmit B1 correction at 7 Tesla

Magnetic Resonance in Medicine

Volumn 76, Issue 1, 2016, Pages 83-93

  Umesh Rudrapatna, S ^a   Juchem, Christoph ^a   Nixon, Terence W ^a   de Graaf, Robin A ^a  

^a YALE UNIVERSITY SCHOOL OF MEDICINE   (United States)

Author keywords

B1 shimming; dynamic shimming; DYNAMITE; multi coil; radio frequency; wavelength effects

Indexed keywords

ANALYTIC METHOD; ARTICLE; COMPARATIVE STUDY; ECHO PLANAR IMAGING; HUMAN; IMAGE PROCESSING; MATHEMATICAL COMPUTING; MATHEMATICAL MODEL; MULTISLICE DYNAMIC TAILORED EXCITATION; NEUROIMAGING; OUTCOME ASSESSMENT; PROCESS OPTIMIZATION; QUANTITATIVE ANALYSIS; RADIOFREQUENCY; RADIOLOGICAL PARAMETERS;

EID: 84974802768     PISSN: 07403194     EISSN: 15222594     Source Type: Journal    
DOI: 10.1002/mrm.25856     Document Type: Article

References (26)

1. Dietrich O, Reiser MF, Schoenberg SO. Artifacts in 3-T MRI: Physical background and reduction strategies. Eur J Radiol 2008;65:29–35.
2. Webb AG, Collins CM. Parallel transmit and receive technology in high-field magnetic resonance neuroimaging. Int J Imaging Syst Technol 2010;20:2–13.
3. 1 field inhomogeneity in UHFMRI: Computational analysis and experimental findings. Magn Reson Imaging 2001;19:219–226.
4. Alagappan V, Nistler J, Adalsteinsson E, et al. Degenerate mode band-pass birdcage coil for accelerated parallel excitation. Magn Reson Med 2007;57:1148–1158.
5. Ibrahim TS, Lee R, Baertlein BA, Abduljalil AM, Zhu H, Robitaille PML. Effect of RF coil excitation on field inhomogeneity at ultra high fields: A field optimized TEM resonator. Magn Reson Imaging 2001;19:1339–1347.
6. Adriany G, Van de Moortele PF, Wiesinger F, et al. Transmit and receive transmission line arrays for 7 Tesla parallel imaging. Magn Reson Med 2005;53:434–445.
7. 1-field correction at 7T using actively tuned coupled inner elements. Magn Reson Med 2011;66:901–910.
8. Li Y, Wang C, Yu B, Vigneron D, Chen W, Zhang X. Image homogenization using pre-emphasis method for high field MRI. Quant Imaging Med Surg 2013;3:217–223.
9. 0-shims. Magn Reson Med 2012;67:601–608.
10. 1 homogeneity, and increase contrast-to-noise ratio for functional cardiac MRI at 3 T. Magn Reson Med 2014;71:1632–1640.
11. Silver MS, Joseph RI, Chen CN, Sank VJ, Hoult DI. Selective population inversion in NMR. Nature 1984;310:681–683.
12. Gilbert KM, Curtis AT, Gati JS, Klassen LM, Menon RS. A radiofrequency coil to facilitate B shimming and parallel imaging acceleration in three dimensions at 7 T. NMR Biomed 2011;24:815–823.
13. 1 inhomogeneity at 3 T. Magn Reson Med 2005;53:479–484.
14. Deichmann R, Good C, Turner R. RF inhomogeneity compensation in structural brain imaging. Magn Reson Med 2002;47:398–402.
15. 1 inhomogeneity. Magn Reson Med 2006;55:719–724.
16. Zelinski AC, Wald LL, Setsompop K, Alagappan V, Gagoski BA, Goyal VK, Adalsteinsson E. Fast slice-selective radio-frequency excitation pulses for mitigating B inhomogeneity in the human brain at 7 Tesla. Magn Reson Med 2008;59:1355–1364.
17. Setsompop K, Alagappan V, Gagoski B, et al. Slice-selective RF pulses for in vivo B inhomogeneity mitigation at 7 Tesla using parallel RF excitation with a 16-element coil. Magn Reson Med 2008;60:1422–1432.
18. Sharma A, Bammer R, Stenger VA, Grissom WA. Low peak power multiband spokes pulses for B inhomogeneity-compensated simultaneous multislice excitation in high field MRI. Magn Reson Med 2015;74:747–755.
19. Juchem C, Nixon TW, McIntyre S, Boer VO, Rothman DL, de Graaf RA. Dynamic multi-coil shimming of the human brain at 7T. J Magn Reson, 2011;212:280–288.
20. Juchem C, Rudrapatna SU, Nixon TW, de Graaf RA. Dynamic multi-coil technique (DYNAMITE) shimming for echo-planar imaging of the human brain at 7 Tesla. NeuroImage 2015;105:462–472.
21. Sbrizzi A, Raaijmakers AJE, Hoogduin H, Lagendijk JJW, Luijten PR, van den Berg CAT. Transmit and receive RF fields determination from a single low-tip-angle gradient-echo scan by scaling of SVD data. Magn Reson Med 2014;72:248–259.
22. Friedman L, Glover GH. Report on a multicenter fMRI quality assurance protocol. J Magn Reson Imaging 2006;23:827–839.
23. Conolly S, Nishimura D, Macovski A. A selective adiabatic spin-echo pulse. J Magn Reson 1989;83:324–334.
24. Juchem C, Nixon TW, Diduch P, Rothman DL, Starewicz P, de Graaf RA. Dynamic shimming of the human brain at 7 T. Concept Magnetic Res Part B 2010;37B:116–128.
25. 1 mapping by reducing off-resonance shift. NMR Biomed 2013;26:1070–1078.
26. 1 inhomogeneity with transmit sense slice-select pulses. Magn Reson Med 2007;57:842–847.